Automatic jointer.



G. E.'TOIVILINSON.

AUTOMATIC JOINTER.

APPLICATION FILED IIILY 12,1915.

4 SHEETS-SHEET l.

Patented Mar.

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/1 TTOR/VEY fvwm y THE COLUMBIA PLANOGRAPH 4co., WASHINGTON, .D. C.

G. E. T OMLINSON.

AUTOMATIC JOINTER.

APPLlcATloN r1LED1uLY12.1915.

Patented Mar. 7, 1916.

4 SHEETS-SHEET 2.

A TTORNEYS Vr B THE COLUMBIA PLANOGRAPH co.. WASHINGTON, D. c.

e. E. TOMUNSON. AUTOMATIC JOINTER.

APPLICAYION FILED JULY 12, 1915.

Patented Mar. 7, 1916.

4 SHEETS-#SHEET 3.

Wl T/VESSES ff ww/QL v A TOR/VEYS Tm: COLUMBIA PLANOGRAPH co., wAslHNGTuN. nA c.

G. E. TOIVILINSON.

AUTOMATIC JOINTER. VAPPLICATION FILED IuLY I2. 1915.

Patented Mar. 7, 1916.

A NORA/EVS THE COLUMBIA pLMyoaRAPII co., WASHINGTON, D. c

GEORGE'EDWARD TOMLINSON, 0F WINCHESTER, KENTUCKY.

AUTOMATIC Jonvrnn.

Specification of Letters Patent.

Patented Mar. 7, 1916.

Application filed July 12, 1915. Serial No.k 39,321.

To all whom it may concern Be it known that l, GEORGE E. TOMLIN- son, a citizen of the United States, and a resident of Winchester, in the county of Clark and State of Kentucky, have invented a new and mproved Automatic Jointer, of

` provide a machine for jointing the edges of staves for vbarrels or hogsheads so as to Joint both edges of pieces or strips of lumber of.

random width automatically or in acontinuous operation.

l/Vith the foregoing and other objects in.

view, the invention consists in the arrangement and combination of parts hereinafterdescribed and claimed, and while the inven-V tion is not restricted to the exact details of construction disclosed herein, still for the purpose of illustrating apractical embodi-Y ment thereof reference is had to the. accompanying drawings, in which likevreference characters designate 'the same parts in the several views, and in which- Figures 1 and 1a considered together constitute a side elevation of a preferred embodiment of the invention; Figs. 2 andV 2fL f considered together are a plan View, partly in section on the line 2-2 of Fig. la; Fig. 3

is a vertical transverse section on thel line 3 3 of Fig. 1a; and Fig. 11 is a plan view of the pressure rollers at the frontend ofy the machine.

Referring more particularlyto Vthe draw'- ings, I show at 10 any suitable form or design of framework` adapted to be supported for the purposes of the invention. Along the bottom of the frame and not far from.

ably supported upon standards 14 whereby the active upper surface of the table may be inclined or tilted in any direction. Such table, however, is substantiallyhorizontaland has its longitudinal axisparallel to the main axis of the entire machine. 13 is vdivided at its middle portion and a cutter head l5 mounted upon the horizontal The table axis 16 extends upwardly between the two` parts of the table so as to joint the lower edge of the stock B passing through the machine. A l

Any suitable number of feed rolls may be used in connection with the machine, the same being preferably arranged in pairs on opposite sides of the line of movement of the stock. As indicated I employ two pairs of rolls 17 and 18, the same being mounted upon shafts 19 and 2O respectively. The shafts are substantiallyy Vertical but are inclined rearwardly at their upper ends slightly so as to cause the action of the feed rolls to hold the stock downwardly upon the cutter head. The rolls may be actuated in any suitable manner, but the means I show vfor this purpose includes a pair of transning over sprocket wheels 24 and 25 re# spectively. The shaft 22 is driven from the powershaft llkby means of sprocket gears 26V and'27, and a sprocket chain 2S between them. rfhe Yshaft. 21, therefore, is driven from the shaft 22 and at the same'speed as well as in the same direction. Connected to the shaft 21 are bevel gears 29 facing toward each other' and between which and meshing with the respective gears are corresponding bevel gears 30 secured to the lower ends of the roll shafts 19 whereby the rolls are driven simultaneously at the same speed but in opposite directions; that is to say, one of the rolls is turned toward the right and the other toward the left but with their active faces acting upon the stock B to more it rearwardly through the machine. rThe shaft 22 carries bevel gears 29 which cooperate" ends of the shafts 20 for a similar purpose tothat already described in connection with the rolls 17, whereby the rolls 18 are drivenj so as to coperate with the rolls 17 to cause the stock B to be continued in its course.

The feed roll shafts 19 and 20 are all adapted to moveslightly toward and from the line of movement of the stock so as to adapt the space between each pair of rolls to thethickness of the stock passing therethrough. To this end, thereforeaeach roll shaft is journaled yin a bracket 31 pivoted on a substantially horizontal pivot 32 at the lower end upon a standard 83. the axis of the pivot being substantially parallel to the len-V gitudinal axis of the machine. The upper end of each bracket 31 is acted upon resiliently by means of a tension spring 34 whose outer end bears against a plate 35 secured rigidly to the frame. The tension springs 34 serve, therefore, to cause the rolls of each pair to approach each other so as to engage any piece of lumber passing between them but allowing the rolls to separate far enough to accommodate a piece of stock of the greatest thickness.

A gravity pressure device comprising a series of frames 36, 87 and 38 is pivoted upon a pivot rod 39 at the front end of the frame, all of the frames being mounted thus coaxially on the same pivot. These several frames carry a series of rollers 40 preferably of flanged construction which coperate with the upper edge of the stock as it passes thereunder and thereby the stock is held down for coperation with the cutter head 15 in connection with the downwardly drawing action of the feed rolls 17 and 1S.

The stock is held in its movement along the machine from lateral displacement or vibration byV any suitable number of adjustable guide shoes 41 and 42. These guide shoes may be spring pressed as shown at 43, and by the adjustment thereof the stock may be caused to be inclined laterally for beveling the 'lower edge thereof.

After the stock is jointed along its lower edge land Vpassed beyond`the shoes 42, it passes between other feed'rolls 44 and V45 arranged in pairs as before described and secured to the upper ends of shafts 46 and 47 respectively, but which shafts are inclined slightly forwardly at their upper ends so as to cause the feeding action 'of these rolls to tend to lift the stock so as to hold it upwardly against an overhead cutter head 48 for jointing the upper edge thereof. While the stock is passing between the front and rear portions of the machine, it is lifted by what I term a transfer roll 49 journaled on a horizontal axis 50 upon a rocking frame 51 pivoted at 52 upon the main frame. At the front end the frame 51 is provided with an adjustable counterbalance 53 tending to hold the transfer roll 49 elevated, but permitting it to be lowered according to the width of the stock passing through the machine. 'A drive wheel 54 is connected to the shaft 52 and is connected by a sprocket chain 55 to a sprocket wheel 56 mounted on the same shaft 57 as a sprocket wheel 5S which meshes with the aforesaid sprocket chain 28 between the wheels 26 and 27. The transfer roll 49 is therefore positively rotated from the first mentioned power device through the sprocket gearing just described and a belt 59 leading upwardly and rearwardly from the shaft 52. j

The feed rolls 44-and 45 have their Shafts jour-naled in brackets 3l pivoted at 32 upon standards 33 substantially the same as those described in connection with the front end of the machine, and the upper ends of the brackets 31 are pressed resiliently toward each other by springs 84 pressing against plates 35. Also guide shoes 41a are employed on opposite sides of the stock as it passes along the rear portion of the machine. The second cutter head is journaled upon an upj wardly projecting frame 60 and adjacent the the stock B as well as to provide the necessary bevel. In other words, by adjusting the table 13 so that the rear portion thereof is inclined upwardly at an angle to the front portion, the cutter head will dress off more ofthe edge of the stick at its ends than at its middle portion, and b y a corresponding adjustment of the two parts of the table 13a,

I the upper edge of the stock may be similarly rtreated so that the stop will taper from its middle toward both ends, the amount of taper depending upon the amount of angularity arranged between the two parts of each table. e

In addition to the tendency of the feed rolls 44 and 45 to feed and hold the stock upwardly against the second cutter head duey to the inclination of the shafts 46 and 47,y I provide a pressure roll 61 mounted upon a frame 62 and pivoted at 63, the same acting upwardly upon the stock just beneath the cutter head 48. This pressure roll 61 is acted upon by a counterbalance 64 adjustable' along the frame 62.

Theshafts 46 and 47 of the second series of feed rolls are driven preferably by miter gears 29 and 30 similar to those already described at the `front end of the machine. The gears 29 are secured in this instance to horizontal transverse shafts 65 and 66 having sprocket wheels 67 and 68 thereon con nected by a sprocket chain 69. The shaft 65 also has a drive sprocket wheel 70 over which a sprocket chain 71 operatesv from a sprocket wheel 72 mounted upon the primary motor shaft 11.

YThe cutter heads 48 may be of any suitable design kas to surface configuration and may be driven at a high rate of speed from any suitable source of power transmitted thereto through their shaft 16 and pulleys 48a. By making the sprocket wheel 70 of smaller diameter than the wheel 27, while other associated parts of the two ends of the machine are of the same proportions, the feed rolls 44 and 45 are caused to operate at a higher rate of speed than the first set o feed rolls, iviththe result that the stock is caused to pass along the second cutter head more rap'- idly than over the first cutter head, and all possibility of obstruction or interference bctiveen the several pieces of stock Will be eliminated.

l. In an automatic jointer, the combination of a cutter head, means to operate the same around a horizontal aXis at high speed, a rigid guide table adjacent the cutter head, means to guide stock along the table and in contact With the cutter head and cause the same to move thereover positively, and a pressure device comprising a plurality7 of frames pivoted on a single axis parallel to the aXis of the cutter head and a plurality of .rolls journaled and operated by gravity in the respective frames.

2. ln an automatic jointer, the combination of a frame, a pair of cutter heads journaled transversely at the front and rear portions of the traine 'in different horizontal planes, means to guide a piece of stock edge- Wise over the first cutter head for jointing the lower edge thereot,a vertical transfer roll for lifting the stock after being jointed on its lower edge thereby causing the stock to be brought into position to be jointed along its upper edge by the second cutter head, and a rocking counterweighted frame supporting the transfer roll.

GEORGE EDWARD EOMLIESOE.Y

Witnesses l/VALLER BEAN, GEO. How.

Copies of this patent may be obtained for ve centsjeach, by addressing the Commissioner of Patents,

Washington, D. C. 

